期刊
JOURNAL OF LUMINESCENCE
卷 169, 期 -, 页码 165-172出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jlumin.2015.09.007
关键词
ZnS nanostructures; Green emission; Cathodoluminescence; ZnS-ZnO
类别
资金
- National Foundation for Science and Technology Development (NAFOSTED), Vietnam [103.02.102.09]
In this paper, the origin of the green emission has been addressed by systematically probing at nanoscale the change of surface morphology, chemical composition and cathodoluminescence spectrum of an individual ZnS microrod and of ZnS nanowires upon increasing oxidation temperature in air. We found that the emergence of the green emission is directly related to the formation of the ZnO layer and the imperfect surface/interface between the newly formed ZnO and the ZnS backbone. A simple approach for fabrication of a broad-band white luminescence ZnO/ZnS-based material has also been proposed and experimentally tested demonstrating high potential for application in UV-excited phosphor-converted white LED. (C) 2015 Elsevier B.V. All rights reserved.
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